I am suffering from slip disc. Mild diffuse disc bulge and disc desiccation with reduce height seen in l5-s1 iv disc which along with mild b/l ligamentumflavum hypertrophy causes mild b/l lateral recessnarrowing without significant nerve root compression. I do a sitting job for 8 to 10 hours .it gives me pain in whole back including lower part of back and both legs I am not used to sit in straight position ,what should I use for sitting straight in the chair while doing computer work .i have to move forward and backward almost every direction like a cashier. Whether hard pillow, soft pillow, stretchable pillow on my chair. Which is the best among these. Please guide me to get well. Thanks.